Improvement in boat-detaching apparatus



dititrh iei GEORGE' STANOLIFF,

Letters Patent No. 111,398, dated January 31, 1871.

or NEW YORK, `N. Y.,

IMPR0VEMENTl IN BOAT-DETACHING APPARATUS.

The Schedule referred to inthese Letters Patent and making part of the same.

To all whom, 'it may concern:

Be itknown that I, GEORGE STANOLLFF, of the city of New York, in the county and State of New York, have invented a new and improved Detachable Tackle- Block; Aand I do hereby declare that the following is a full, clear, andexact description thereof, which will enable others skilled in vthe art to make and use the same, reference being had to the accompanying drawing forming part ot this specitication.

Figure 1 represents a side View of my improved tackle-block.

Figure 2 is a face view of the saine.

Similar letters of reference indicate corresponding arts. 1 p This invention has for its object to so provide tackle-blocks that the load suspended from them may be readily detached, when desired.

The invention is chiefly applicable to davits forsuspending boats from the sides of a vessel, and for permitting the rapid detachment of the same but may also be used for other-purposes.

The invention consists in connecting the strap of the tackle-block with a swinging hook, fastening-lever, and locking-cam, all operating in such manner that, by turning the cam, one end of the hook will be disengaged to drop and let go whateverwas suspended from it.

vA in the drawing represents a tackle-block, of suitable ,kind and size.

'lo the strap B of said block is secured a projecting; arm, C, which receives the pivot a of a hook, D, and also the pivot?) of an L-shaped lever, E.

is pvoted a cam, F, that has a projecting handle, d.

rlhe free end of the leverE passes through the forked arm c between the strap B and cam F.

The free end of the hook D can be tted in to a notch in the short arm of vthe lever E, and the other arm of the latter then locked against the strap B by the cam F, all as shown by full lilies in fig.v 1.

vThe cam may, in this position, be locked by a pin, e, fitted through the arm c, `so that the hook will be securely held close to the lever E'.

\ Any weight suspended from the hook willthns hang secure; but whenever the cam is turned, so as no longer to clamp the endA of' the lever, the latter will swing clear of the hook, and the hook will drop On its pivot, all as indicated by dotted lilies in lig. 1.

. The weight hanging on the hook can thus be readily detached.

'lhe invention, it will he seen, is peculiarly applicable to boat-detaching apparatus and similar' purposes. To Operate the detaching-cam, a cord is tied to its handle, by pulling which the can will be turned toirelease the ho,ok.

' Having thus described my invention,

I claim as `new and desire to secure by Letters v Patent- Thev tackle-block, rovided with the pivoted hook D, lever E, and carn- F, all arranged to operate snbstantially as herein shown and described.

Witnesses:v GEORGE STANGLIFF, GEO. W, MABEE,

T. B. Mosrmn. 

